What's the difference between the Yashio Factory Super Silent II and III? They look the same, but the II is less expensive then the III.

Also, their downpipe also has a resonator so does that mean that if you get the downpipe and the resonated exhaust, it's super extra quiet?

Bump, I'm sure someone here knows *cough*RW240*cough* lol, you said how you wanted this exhaust a while back.